 function setStyle(w,h){
	 /*修改个人中心头部背景高度*/
	$('#top_mig').css('margin-bottom',h*0.19);
	/**设置圆形头像大小**/
    var portrait = $('#top_mig').height()/1.16;	
	$('#portrait_img').attr("height",portrait ); 
	$('#portrait').css('width',portrait);
	$('#portrait').css('height',portrait);
	$('#portrait').css('padding-top',h*0.2);

	$('#portrait_im').attr("width",portrait ); 
	$('#portrait_img').attr("height",portrait ); 
	
	

	
	 }
	 
	 function setTop_mig(mig_url){
	mig_url = 'url('+mig_url+')';
	$('#top_mig').css('background',mig_url);
	$('#top_mig').css('background-size','cover');
		 
	 }